摘要:
The invention relates to a method for producing 5-halo-2,4,6-tifluoroisophthalic acid of formula (I), wherein X represents F, Cl, Br, or I, by hydrolysis of 5-halo-2,4,6-trifluoroisophthalodinitrile of formula (II). Said invention is characterised in that in a first step, isophthalodinitrile (II) or a solution containing isophthalodinitrile (II) is reacted with a concentrated sulphuric acid at room temperature in order to form a 5-halo-2,4,6-trifluoroisophthalodiamide of general formula (III), and is, subsequently, heated and in a second step, isophthalic acid (I) is produced after additional heating and addition of water.
摘要:
Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene comprising steps A) and B): A) chlorination of fluorobenzene derivatives of formula (II), in which X=fluorine of H, Z=nitro, bromo or chloro and n=0 or 1-4 and B) fluorination of the distillation residue and separation by distillation of the 1,3,5-trifluoro-2,4,6-trichlorobenzene thus produced.
摘要翻译:由氟代苯制备1,3,5-三氟-2,4,6-三氯苯的方法,包括步骤A)和B):A)氯化式(II)的氟代苯衍生物,其中X = H的氟, Z =硝基,溴或氯,n = 0或1-4,B)氟化蒸馏残余物并通过蒸馏分离由此制得的1,3,5-三氟-2,4,6-三氯苯。
摘要:
Method for the production of 1,3,5-trifluoro-2,4,6-trichlorobenzene from fluorobenzene comprising steps A) and B): A) chlorination of fluorobenzene derivatives of formula (II), in which X=fluorine of H, Z=nitro, bromo or chloro and n=0 or 1-4 and B) fluorination of the distillation residue and separation by distillation of the 1,3,5-trifluoro-2,4,6-trichlorobenzene thus produced.
摘要翻译:由氟代苯制备1,3,5-三氟-2,4,6-三氯苯的方法,包括步骤A)和B):A)氯化式(II)的氟代苯衍生物,其中X = H的氟, Z =硝基,溴或氯,n = 0或1-4,B)氟化蒸馏残余物并通过蒸馏分离由此制得的1,3,5-三氟-2,4,6-三氯苯。
摘要:
The present invention relates to a process for preparing aryl-substituted fused pyrimidines of the general formula (I) in which L1 to L5 are H, halogen, CN, NO2, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy etc.; Y1 to Y3 are C—RY or N; RY is H or optionally substituted C1-C4-alkyl or two adjacent RY together form a ring; X is OH, Cl or Br; which comprises (i) the reaction of a 2-phenylmalonate with a compound (III) or a tautomer thereof, in the presence of a suitable base, where the alcohol, released during the reaction, of the formula R—OH is continuously removed from the reaction mixture under reduced pressure; giving a compound of the formula (I) or a salt thereof in which X is OH, and, if X in the compounds of the general formula (I) is chlorine or bromine, (ii) the reaction of the compounds of the formula (I) obtained in step (i) or the salts with a halogenating agent.
摘要:
The invention relates to a process for the extractive removal of phenols, alcohols, amines, phoshines, hydroxylamines, hydrazines, oximes, imines, water, carboxylic acids, amino acids, hydroxamic acids, sulfinic acids, sulfonic acids, peroxycarboxylic acids, phosphonous acids, phosphinous acids, phosphonic acids, phosphinic acids or phosphoric acids from aprotic solvents by means of ionic liquids of the formula [K]n+[A]n−, where n, [K]+ and An− are defined as in the description.
摘要翻译:本发明涉及一种用于萃取去除酚,醇,胺,磷,羟胺,肼,肟,亚胺,水,羧酸,氨基酸,异羟肟酸,亚磺酸,磺酸,过氧羧酸,膦酸, 通过式[K] n + [A] n-,其中n,[K] +和An-的离子液体由非质子传递溶剂中的膦酸,次膦酸或次膦酸或磷酸定义如说明书中所定义。
摘要:
The invention relates to a process for the extractive removal of phenols, alcohols, amines, phoshines, hydroxylamines, hydrazines, oximes, imines, water, carboxylic acids, amino acids, hydroxamic acids, sulfinic acids, sulfonic acids, peroxycarboxylic acids, phosphonous acids, phosphinous acids, phosphonic acids, phosphinic acids or phosphoric acids from aprotic solvents by means of ionic liquids of the formula [K]n+[A]n−, where n, [K]+ and An− are defined as in the description.
摘要翻译:本发明涉及一种用于萃取去除酚,醇,胺,磷,羟胺,肼,肟,亚胺,水,羧酸,氨基酸,异羟肟酸,亚磺酸,磺酸,过氧羧酸,膦酸, 亚磷酸,膦酸,次膦酸或非质子溶剂中的磷酸通过式[K] n + + [A] SUP>的离子液体,其中n, [K] + SUP>和A n - SUP>如说明书中所定义。